ASTRO 7N EXAMINATION TEST 2026
QUESTIONS WITH SOLUTIONS
◉ Which of the following do several contributors in your reading
articles suggest is a good model of an intelligent "alien" species already
living on Earth? Answer: Octopus
◉ The main source of energy in the Sun is. Answer: proton-proton chain
◉ If the Sun had twice its mass, then which of the planets would be in
its habitable zone? Answer: Jupiter
◉ The above diagram shows some information from NASA Eyes about
the planet TOI-216.01. Which of the following is TRUE about that
planet? Answer: It is a giant planet
◉ Is there anything wrong with this diagram? Answer: No, the galaxies
are in the right place.
◉ How did "Coneheads", one of the creations of David Aguilar, navigate
their world which had thick clouds that made it hard to see even 20 feet
in front of them? Answer: They emit odors and receive them which
allows them to follow these paths without vision
, ◉ The top star is at a distance of 2 and the bottom star is at a distance of
1. How luminous would the TOP STAR need to be, such that it appears
as bright as the bottom star, which has luminosity of 100? Answer: 400
◉ In the figure above, how would you calculate the fraction of the mass
of the gas in the universe that is in the form of Helium? Answer: Take 4
x 4 for the mass of Helium, and divide by 4 x 4 + 48 x 1 for the total
mass
◉ What is the name for colors opposite each other (180 degrees a part)
on the color wheel? Answer: Complementary colors
◉ If they were all formed at the same time, which of the stars in the
diagram above will live the longest? Answer: B
◉ The above image shows a parallax measurement for a nearby star.
What is the distance to that star? Answer: 1 parsec
◉ How many neutrons are there in helium-3? Answer: 1
◉ Which step/steps has/have a form of helium as a product? Answer:
The step where 1H and 2H combine AND the step where two 3He nuclei
combine
QUESTIONS WITH SOLUTIONS
◉ Which of the following do several contributors in your reading
articles suggest is a good model of an intelligent "alien" species already
living on Earth? Answer: Octopus
◉ The main source of energy in the Sun is. Answer: proton-proton chain
◉ If the Sun had twice its mass, then which of the planets would be in
its habitable zone? Answer: Jupiter
◉ The above diagram shows some information from NASA Eyes about
the planet TOI-216.01. Which of the following is TRUE about that
planet? Answer: It is a giant planet
◉ Is there anything wrong with this diagram? Answer: No, the galaxies
are in the right place.
◉ How did "Coneheads", one of the creations of David Aguilar, navigate
their world which had thick clouds that made it hard to see even 20 feet
in front of them? Answer: They emit odors and receive them which
allows them to follow these paths without vision
, ◉ The top star is at a distance of 2 and the bottom star is at a distance of
1. How luminous would the TOP STAR need to be, such that it appears
as bright as the bottom star, which has luminosity of 100? Answer: 400
◉ In the figure above, how would you calculate the fraction of the mass
of the gas in the universe that is in the form of Helium? Answer: Take 4
x 4 for the mass of Helium, and divide by 4 x 4 + 48 x 1 for the total
mass
◉ What is the name for colors opposite each other (180 degrees a part)
on the color wheel? Answer: Complementary colors
◉ If they were all formed at the same time, which of the stars in the
diagram above will live the longest? Answer: B
◉ The above image shows a parallax measurement for a nearby star.
What is the distance to that star? Answer: 1 parsec
◉ How many neutrons are there in helium-3? Answer: 1
◉ Which step/steps has/have a form of helium as a product? Answer:
The step where 1H and 2H combine AND the step where two 3He nuclei
combine
